HD 114729

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**HD 114729**
Observation data Equinox 2000
Constellation	Centaurus
Right ascension	13^h 12^m 44.26^s
Declination	-31° 52' 24.06"
Apparent magnitude (V)	6.69
Distance	114.1 ly (35.00 pc)
Spectral type	G3V
Other designations
CD-31°10156, HIP 64459

HD 114729 is a 7th magnitude star in the constellation of Centaurus. Like our Sun, it is a yellow dwarf (spectral type G3 V). However, it is about 10% less massive than the Sun, but still twice as bright. That indicates a much greater age, perhaps over 10,000 million years.

In 2003 the California and Carnegie Planet Search team announced the discovery of a planet orbiting the star.

[edit] HD 114729 b

**HD 114729 b**
Orbital elements
Extrasolar planet		Lists of extrasolar planets
Semimajor axis	(a)	2.11±0.12 AU
Eccentricity	(e)	0.167±0.055
Orbital period	(P)	1114±15 d
Inclination	(i)	?°
Longitude of periastron	(ω)	93±30°
Time of periastron	(τ)	2,450,520±67 JD
Physical characteristics
Mass	(m)	>0.95±0.10 M_J
Radius	(r)	? R_J
Density	(ρ)	? kg/m³
Temperature	(T)	? K
Discovery information
Discovery date		2003
Discoverer(s)		Butler, Marcy, Vogt
Detection method		Radial velocity
Discovery status		Published

The extrasolar planet, designated as HD 114729 b, is probably slightly less massive than Jupiter. It is an "eccentric Jupiter" meaning that it does not orbit very near the star like the famous 51 Pegasi b but further out and its orbit is very oval-shaped. Mean distance from the star is 2.08 AU, about twice Earth's distance from the Sun. At periapsis, the planet is only 1.43 AU from the star (comparable to the distance of Mars from the Sun), and at apoapsis 2.72 AU (inner asteroid belt).